DNS Troubleshooter Tool
This tool checks your DNS resolution, latency, provider, and reliability to diagnose DNS issues.
Idle. Ready to run DNS tests.
Progress
DNS Resolution: –
DNS Latency: –
DNS Provider: –
IPv4 DNS: –
IPv6 DNS: –
DNS Health Tier: –
Notes: –
What This Tool Does
This tool checks your DNS resolution, latency, IPv4/IPv6 availability, and DNS provider to diagnose DNS issues.
Runs in Your Browser
No system access required — everything is tested using safe browser requests.
Quick Start
- Click Run DNS Troubleshooter.
- Wait for the DNS tests to complete.
- Review your DNS health tier and notes.
Common DNS Problems
- Slow DNS servers
- ISP DNS outages
- DNS hijacking or redirection
- IPv6 DNS misconfiguration
- Captive portals blocking DNS
Fixes
- Switch to Google DNS (8.8.8.8 / 8.8.4.4)
- Switch to Cloudflare DNS (1.1.1.1)
- Restart your router
- Disable VPN temporarily
- Flush DNS cache
Related Tools
- Router Check Tool
- Packet Loss Test Tool
- Internet Speed Diagnostic Tool